what is the toughest math problem? ever?

Answer 1

Hard to pick just one.

The Riemann Hypothesis has been out there for about 150 years. Want to get rich and famous forever? Prove or disprove that.

It is: All the non-trivial zeroes of the Riemann Zeta function have real part of one-half.

Sounds pretty easy.

Answer 2

Most difficult math problem you have encountered
Question: What's the hardest math problem you've ever done?
mr john riddle

Answer 1:
It's invariably the one that I'm working on currently. This time
it's: What's the geometrical meaning of the central extension of the algebra
of diffeomorphisms of the circle?
jlu

Answer 2:
I've been working on a problem in Number Theory off and on for almost
ten years called "the Collatz Conjecture" aka "the 3X + 1 problem".
Let f(x) be a function defined on the positive integers such that:

f(x) = x/2 if x is even
f(x) = (3*x+1)/2 if x is odd

Then the conjecture is: iterates of f(x) will eventually reach 1 for any
initial value of x. Various cash prizes have been offered for the proof
or disproof of this conjecture.
hawley

Answer 3

Calculating the last digit of pi?

Figuring out what a 10 dimensional Calabi-Yau shape would have to look like in order to produce the properties of lepton strings that we measure?

Answer 4

Compute the value of Pi.

Answer 5

E=MC 2

Answer 6

What is pi to its conclusion?

Answer 7

find the last digit of pi.....3.1415926.................

Answer 8

P =? NP

Answer 9

everything.